It looks like you're trying to configure a build for QEMU with several options enabled and disabled. Based on the flags provided, here's what it seems to be doing: ### Disabled Features: - **Audio/Video:** Disabling various audio (e.g., `--disable-alsa`, `--disable-coreaudio`) and video-related backends. - **Storage Formats:** Disabling support for various storage formats like VMDK, VHDX, Qcow1, etc. - **Compression:** Disabling compression algorithms such as Bzip2, LZFSE, Snappy, LZO. - **Networking:** Disabling network-related features like Netmap and L2TPv3. - **Security/Authentication:** Disabling authentication methods like PAM, Keyring, SELinux, U2F, etc. - **Guest Agent:** Disabling guest agent support for both MSI and regular. - **Plugins and Tools:** Disabling various plugins, replication, and tools. - **UserModes:Disabling BSD-user and Linux-user modes. - **Other Features:** Disabling features like Capstone, Gettext, Iconv, etc. ### Enabled Features: - **KVM/QEMU System Emulator:** Enabling KVM for virtualization and QEMU system emulator (`--enable-kvm`, `--enable-system`). - **Performance Optimization:** - Enabling PIE (Position Independent Executable), LTO (Link-Time Optimization), and AF_XDP. - Compiling with optimizations like `-O2`, function alignment, and various compiler flags for performance. - **Networking:** Enabling Slirp, Vhost-kernel, Vhost-net, Vhost-user, and Vhost-Vdpa. - **Coroutines and Memory Management:** Enabling coroutine pool, Linux AIO, Linux IO-Uring, Malloc Trim, Membarrier, and Cap-ng. - **Security:** Enabling Seccomp and Stack Protector Strong for security hardening. - **Other Features:** Enabling TPM, Zstd (for compression), NUMA support, FDT disabled, and others. ### Compiler Flags: The build is using several compiler flags to optimize performance, enable security features, and ensure compatibility. For example: - `-O2` for optimization level 2. - `-fno-semantic-interposition` to disable function inlining for better binary size. - `-flto=auto` for link-time optimizations. ### Linker Flags: The linker is configured with flags like `-Wl,-z,noexecstack` for security, and `-Wl,-O1` for optimization. It also uses `--as-needed` to reduce unnecessary dependencies. ### CPU Compatibility: - The build targets x86 CPUs with version 4 (`--x86-version=4`), which might optimize for newer Intel/AMD processors. ### Summary: This configuration seems tailored for a lightweight, high-performance QEMU build focused on virtualization without audio/video support or many plugins. It prioritizes security and performance optimizations while disabling unnecessary features.